Character mashups at their funniest! Station Wagon Love Children is a old trend of taking two characters with befitting to eachother and combining them.
Love Children can be generated in the Fusion Lab background in Walfas, which allows for random generation, and they can be made manually too.
For a guide on what to submit and a difficulty gauge to pull off a pairing, check the Illustrated Guide To Station Wagon Love Children by Spaztique.